Sabbahi outlined for reporters some of the opposition's grievances and demands.

"Today we announce that our revolution is still ongoing," he said. "We will not allow one faction to monopolize power and thus we reject a Muslim Brotherhood state. We want a constitution that represents all Egyptians and protects their rights. We want sufficient guarantees that the elections will be free and fair, and we want justice for the martyrs of the revolution. We also want social justice that will allow for a dignified life for all Egyptians. This is our message today and the people will continue to express these demands until their revolution is complete."

Many among the marching protestors agreed with the demands and pledged to continue struggling towards overthrowing the current Muslim Brotherhood-dominated administration of President Muhammad Morsi.

"Today is a continuation of the revolution's demands represented in the fact that the people will not rest until these demands are complete," he said. "To the fore in this regard is the ousting of the current regime which does not represent the goals or spirit of the revolution."

Similar violence is said to have occurred in Suez and at least five people are reported to have been shot dead in clashes between police and protesters there. It was not immediately clear whether those killed were members of the security forces or civilians.